{
    "id": 4489,
    "url": "https://svs.gsfc.nasa.gov/4489/",
    "page_type": "Visualization",
    "title": "Yearly Arctic Sea Ice Age with Graph of Ice Age by Area: 1984 - 2016",
    "description": "One significant change in the Arctic region in recent years has been the rapid decline in perennial sea ice. Perennial sea ice, also known as multi-year ice, is the portion of the sea ice that survives the summer melt season. Perennial ice may have a life-span of nine years or more and represents the thickest component of the sea ice; perennial ice can grow up to four meters thick. By contrast, first year ice that grows during a single winter is generally at most two meters thick.This animation shows the Arctic sea ice age for the week of the minimum ice extent for each year, depicting the age in different colors. Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white. A color scale identifies the age of the intermediary years.Correction: The original release on 10/28/2016 incorrectly labeled the oldest category on the graph as \"5+\". This was corrected to read \"4+\" on 10/30/2016. || ",
    "release_date": "2016-10-28T11:00:00-04:00",
    "update_date": "2025-02-02T00:08:47.888710-05:00",
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        "alt_text": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.This video is also available on our YouTube channel.",
        "width": 1024,
        "height": 576,
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    "main_video": null,
    "main_credits": {
        "Visualizations by": [
            {
                "name": "Cindy Starr",
                "employer": "Global Science and Technology, Inc."
            }
        ]
    },
    "progress": "Complete",
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            "description": "One significant change in the Arctic region in recent years has been the rapid decline in perennial sea ice. Perennial sea ice, also known as multi-year ice, is the portion of the sea ice that survives the summer melt season. Perennial ice may have a life-span of nine years or more and represents the thickest component of the sea ice; perennial ice can grow up to four meters thick. By contrast, first year ice that grows during a single winter is generally at most two meters thick.<br><br>This animation shows the Arctic sea ice age for the week of the minimum ice extent for each year, depicting the age in different colors. Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white. A color scale identifies the age of the intermediary years.<br><br>Correction: The original release on 10/28/2016 incorrectly labeled the oldest category on the graph as \"5+\". This was corrected to read \"4+\" on 10/30/2016.",
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            "description": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.<br><a href='https://www.youtube.com/watch?v=7Hl9y6cJIeU'>This video is also available on our YouTube channel</a>.<br>",
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                        "alt_text": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.This video is also available on our YouTube channel.",
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                        "alt_text": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.This video is also available on our YouTube channel.",
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                        "alt_text": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.This video is also available on our YouTube channel.",
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                        "alt_text": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.This video is also available on our YouTube channel.",
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                        "alt_text": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.This video is also available on our YouTube channel.",
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                        "alt_text": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.This video is also available on our YouTube channel.",
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                        "alt_text": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.This video is also available on our YouTube channel.",
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                        "alt_text": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.This video is also available on our YouTube channel.",
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                        "filename": "Yearly_Minimum_IceAge_withGraph_4489.pptx",
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                        "alt_text": "This animation shows the annual change in sea ice age at each year's minimum extent.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white.  A bar graph displayed in the lower right corner quantifies the area covered by the ice in each age category on the day of the annual minimum. In addition, memory bars shown in green portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum.This video is also available on our YouTube channel.",
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            "description": "A still image of the annual minimum sea ice age in 2016 with the graph overlay. The green memory bars portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum. ",
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                        "alt_text": "A still image of the annual minimum sea ice age in 2016 with the graph overlay. The green memory bars portray the maximum annual value for each age range seen since January 1, 1984 on the day of the annual minimum. ",
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    "related": [
        {
            "id": 4750,
            "url": "https://svs.gsfc.nasa.gov/4750/",
            "page_type": "Visualization",
            "title": "Weekly Arctic Sea Ice Age with Graph of Ice Age By Area: 1984 - 2019",
            "description": "This visualization shows the age of the Arctic sea ice between 1984 and 2019. Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white. A graph displayed in the upper left corner quantifies the area covered sea ice  4 or more years old in millions of square kilometers.This video is also available on our YouTube channel. || IceAge_2019_comp_withGraph.3714_print.jpg (1024x576) [124.7 KB] || IceAge_2019_comp_withGraph.3714_searchweb.png (320x180) [71.6 KB] || IceAge_2019_comp_withGraph.3714_thm.png (80x40) [6.3 KB] || IceAge_2019_comp_withGraph_1080p30.mp4 (1920x1080) [90.9 MB] || IceAge_2019_comp_withGraph_1080p30.webm (1920x1080) [14.9 MB] || iceAge_withGraph (3840x2160) [0 Item(s)] || captions_silent.27894.en_US.srt [43 bytes] || IceAge_2019_comp_withGraph_2160p30.mp4 (3840x2160) [255.2 MB] || IceAge_2019_comp_withGraph_1080p30.mp4.hwshow [200 bytes] || ",
            "release_date": "2019-09-30T12:00:00-04:00",
            "update_date": "2025-02-02T00:12:39.170019-05:00",
            "main_image": {
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                "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004700/a004750/IceAge_2019_comp_withGraph.3640_print.jpg",
                "filename": "IceAge_2019_comp_withGraph.3640_print.jpg",
                "media_type": "Image",
                "alt_text": "Pair 3A:  This image shows the Arctic sea ice age in the first week (week 1) of January, 2019.  During this week, the area covered by the sea ice that was 4 years of age or older extended 116,000 square kilometers.",
                "width": 1024,
                "height": 576,
                "pixels": 589824
            }
        },
        {
            "id": 4616,
            "url": "https://svs.gsfc.nasa.gov/4616/",
            "page_type": "Visualization",
            "title": "Disappearing Ice",
            "description": "This visualization begins by showing the dynamic beauty of the Arctic sea ice as it responds to winds and ocean currents.  Research into the behavior of the Arctic sea ice for the last 30 years has led to a deeper understanding of how this ice survives from year to year.  In the animation that follows,  age of the sea ice is visible, showing the younger ice in darker shades of blue and the oldest ice in brighter white.  This visual representation of the ice age clearly shows how the quantity of older and thicker ice has changed between 1984 and 2016.Complete transcript available.This video is also available on our YouTube channel. || Arctic_Sea_Ice_Age.6140_print.jpg (1024x576) [145.3 KB] || Arctic_Sea_Ice_Age.6140_searchweb.png (320x180) [69.8 KB] || Arctic_Sea_Ice_Age.6140_thm.png (80x40) [6.0 KB] || Arctic_Sea_Ice_Age_rev1_1080p30_wAudio.webm (1920x1080) [27.2 MB] || Arctic_Sea_Ice_Age_rev1_1080p30_wAudio.mp4 (1920x1080) [183.5 MB] || SeaIceAge_comp_final (3840x2160) [0 Item(s)] || a004616_captions.en_US.srt [3.9 KB] || a004616_captions.en_US.vtt [3.9 KB] || Disappearing_Ice.aif [38.1 MB] || Arctic_Sea_Ice_Age_rev1.2160p30_wAudio.mp4 (3840x2160) [258.5 MB] || Arctic_Sea_Ice_Age_YTube.2160p30_wAudio.mp4 (3840x2160) [978.3 MB] || Final_seaIceAge_Prores_withAudio.mov (3840x2160) [14.3 GB] || Arctic_Sea_Ice_Age_rev1_1080p30_wAudio.mp4.hwshow [204 bytes] || ",
            "release_date": "2018-03-13T00:00:00-04:00",
            "update_date": "2025-02-02T00:10:30.479393-05:00",
            "main_image": {
                "id": 405841,
                "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004600/a004616/Arctic_Sea_Ice_Age.6140_print.jpg",
                "filename": "Arctic_Sea_Ice_Age.6140_print.jpg",
                "media_type": "Image",
                "alt_text": "This visualization begins by showing the dynamic beauty of the Arctic sea ice as it responds to winds and ocean currents.  Research into the behavior of the Arctic sea ice for the last 30 years has led to a deeper understanding of how this ice survives from year to year.  In the animation that follows,  age of the sea ice is visible, showing the younger ice in darker shades of blue and the oldest ice in brighter white.  This visual representation of the ice age clearly shows how the quantity of older and thicker ice has changed between 1984 and 2016.Complete transcript available.This video is also available on our YouTube channel.",
                "width": 1024,
                "height": 576,
                "pixels": 589824
            }
        },
        {
            "id": 4522,
            "url": "https://svs.gsfc.nasa.gov/4522/",
            "page_type": "Visualization",
            "title": "Weekly Animation of Arctic Sea Ice Age with Two Graphs: 1984 - 2016",
            "description": "This visualization shows the age of the sea ice between 1984 and 2016. Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white. Two bar graphs,  described below, are shown in the lower left and right corners.  This video is also available on our YouTube channel. || WeeklySeaIceAge_with2Graphs.4944_print.jpg (1024x576) [125.2 KB] || WeeklySeaIceAge_with2Graphs.4944_searchweb.png (320x180) [75.7 KB] || WeeklySeaIceAge_with2Graphs.4944_thm.png (80x40) [5.8 KB] || WeeklySeaIceAge_with2Graphs_p30_1080p30.mp4 (1920x1080) [75.8 MB] || WeeklySeaIceAge_with2Graphs_p30_1080p30.webmhd.webm (1080x606) [19.6 MB] || WeeklyIceAge_with2Graphs (3840x2160) [0 Item(s)] || WeeklyIceAge_with2Graphs (3840x2160) [0 Item(s)] || WeeklySeaIceAge_with2Graphs_4522.key [81.7 MB] || WeeklySeaIceAge_with2Graphs_4522.pptx [81.3 MB] || WeeklySeaIceAge_with2Graphs_p30_2160p30.mp4 (3840x2160) [127.0 MB] || the-earth-observing-fleet-by-theme-sea-ice-cover.hwshow || ",
            "release_date": "2016-11-10T00:00:00-05:00",
            "update_date": "2025-02-02T00:09:01.561280-05:00",
            "main_image": {
                "id": 418326,
                "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004500/a004522/WeeklySeaIceAge_with2Graphs.4944_print.jpg",
                "filename": "WeeklySeaIceAge_with2Graphs.4944_print.jpg",
                "media_type": "Image",
                "alt_text": "This visualization shows the age of the sea ice between 1984 and 2016. Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white. Two bar graphs,  described below, are shown in the lower left and right corners.  This video is also available on our YouTube channel.",
                "width": 1024,
                "height": 576,
                "pixels": 589824
            }
        },
        {
            "id": 4509,
            "url": "https://svs.gsfc.nasa.gov/4509/",
            "page_type": "Visualization",
            "title": "Weekly Animation of Arctic Sea Ice Age with Graph of Ice Age by Percent of Total: 1984 - 2016",
            "description": "One significant change in the Arctic region in recent years has been the rapid decline in perennial sea ice. Perennial sea ice, also known as multi-year ice, is the portion of the sea ice that survives the summer melt season. Perennial ice may have a life-span of nine years or more and represents the thickest component of the sea ice; perennial ice can grow up to four meters thick. By contrast, first year ice that grows during a single winter is generally at most two meters thick.Below is an animation of the  weekly sea ice age between 1984 and 2016. The animation shows the seasonal variability of the ice, growing in the Arctic winter and melting in the summer. In addition, this also shows the changes from year to year, depicting the age of the sea ice in different colors. Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white. A color scale identifies the age of the intermediary years.A graph in the lower, right corner the quantifies the change over time by showing each age category of sea ice as a percent of total ice cover in the Arctic Ocean. The lavender outline on the map indicates the spatial region covered by the Arctic Ocean and thus included in the graph.Correction:  The original release on 10/28/2016 incorrectly labeled the oldest category on the graph as \"5+\".  This was  corrected to read \"4+\" on 10/30/2016. || ",
            "release_date": "2016-10-28T11:00:00-04:00",
            "update_date": "2025-02-02T00:08:51.753857-05:00",
            "main_image": {
                "id": 419002,
                "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004500/a004509/WeeklySeaIceAge_withPctGraph_4k.4944_print.jpg",
                "filename": "WeeklySeaIceAge_withPctGraph_4k.4944_print.jpg",
                "media_type": "Image",
                "alt_text": "This visualization shows the age of the sea ice between 1984 and 2016.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white. A bar graph displayed in the lower right corner quantifies the percent of total sea ice in each age category.",
                "width": 1024,
                "height": 576,
                "pixels": 589824
            }
        },
        {
            "id": 4510,
            "url": "https://svs.gsfc.nasa.gov/4510/",
            "page_type": "Visualization",
            "title": "Weekly Animation of Arctic Sea Ice Age with Graph of Ice Age By Area: 1984 - 2016",
            "description": "One significant change in the Arctic region in recent years has been the rapid decline in perennial sea ice. Perennial sea ice, also known as multi-year ice, is the portion of the sea ice that survives the summer melt season. Perennial ice may have a life-span of nine years or more and represents the thickest component of the sea ice; perennial ice can grow up to four meters thick. By contrast, first year ice that grows during a single winter is generally at most two meters thick.Below is an animation of the  weekly sea ice age between 1984 and 2016. The animation shows the seasonal variability of the ice, growing in the Arctic winter and melting in the summer. In addition, this also shows the changes from year to year, depicting the age of the sea ice in different colors. Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white. A color scale identifies the age of the intermediary years.A graph in the lower, right corner the quantifies the change over time by showing the area in millions of square kilometers covered by each age category of perennial sea ice. This graph also includes a memory bar - the green line that here represents the current maximum value seen thus far in the animation for the particular week displayed. For example, when showing the first week in September, the memory bar will show the maximum value seen for all prior years' first week of September since the beginning of the animation (January 1, 1984).Correction: The original release on 10/28/2016 incorrectly labeled the oldest category on the graph as \"5+\". This was corrected to read \"4+\" on 10/30/2016. || ",
            "release_date": "2016-10-28T11:00:00-04:00",
            "update_date": "2025-02-02T22:28:21.554535-05:00",
            "main_image": {
                "id": 419043,
                "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004500/a004510/weeklySeaIceAge_withSqKmGraph_4k.4944_print.jpg",
                "filename": "weeklySeaIceAge_withSqKmGraph_4k.4944_print.jpg",
                "media_type": "Image",
                "alt_text": "This visualization shows the age of the Arctic sea ice between 1984 and 2016.  Younger sea ice, or first-year ice, is shown in a dark shade of blue while the ice that is four years old or older is shown as white. A bar graph displayed in the lower right corner quantifies the area in square kilometers covered by each age category of perennial sea ice.",
                "width": 1024,
                "height": 576,
                "pixels": 589824
            }
        }
    ],
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